The telescope in the OP whose observations were interrupted has a 4m primary mirror. Hubble has a 2.4m primary mirror.
The optical corrector lens -- just the corrector lens alone -- that is part of the camera instrument of OP has a diameter of 1m, with a mass of about 200kg. (https://www.darkenergysurvey.org/the-des-project/instrument/). The entire Starlink satellite mass is 227kg.
I don't think SpaceX is going to be putting instruments of this class on its satellites.